Blonde Naso Tang feeding question

[sully08]

I just picked up a beautiful 5" BNT. He seems to be adjusting to his 220g quite nicely. He does not have much interest in meaty foods such as Mysis,brine shrimp etc. He loves to graze on the live rock and he picks at Nori sheets that I put on a clip for him. Would this be enough for him? or is there something else I can try. Will he eventually take the mysis and brine shrimp? I have only had him for about 5 days.